Triple

T392632
Position Surface form Disambiguated ID Type / Status
Subject Omaha, Nebraska E8912 entity
Predicate homeTo P4624 FINISHED
Object TD Ameritrade (historical headquarters)
TD Ameritrade (historical headquarters) refers to the former main corporate offices of the online brokerage firm TD Ameritrade, which was based in Omaha, Nebraska before its acquisition by Charles Schwab.
 E49923 NE FINISHED

How this triple was built (4 steps)

Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.

NER Named-entity recognition gpt-5-mini
Instruction
Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).
Input
Phrase: TD Ameritrade (historical headquarters) | Statement: [Omaha, Nebraska, homeTo, TD Ameritrade (historical headquarters)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: TD Ameritrade (historical headquarters)
Context triple: [Omaha, Nebraska, homeTo, TD Ameritrade (historical headquarters)]
  • A. State Street Pavilion
    The State Street Pavilion is a premium seating and hospitality area at Fenway Park offering elevated views of the field along with upscale amenities for Boston Red Sox fans.
  • B. Salesforce Tower vicinity
    Salesforce Tower vicinity is the bustling area surrounding San Francisco’s tallest skyscraper, characterized by dense office towers, transit connections, and the commercial core of the Financial District.
  • C. Chicago Stock Exchange
    The Chicago Stock Exchange is a regional securities exchange in the United States that facilitates the trading of stocks and other financial instruments.
  • D. Chicago Board of Trade
    The Chicago Board of Trade is one of the world’s oldest and most influential futures and options exchanges, serving as a major hub for trading agricultural and financial derivatives.
  • E. New York Stock Exchange Building
    The New York Stock Exchange Building is a historic neoclassical landmark in New York City that houses the world’s largest stock exchange by market capitalization.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg Description generation gpt-5.1
Instruction
Generate a one-sentence description of the target entity. 
You are given a context triple in the form (subject, predicate, object), where the object is the target entity. 
# Instructions
Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. 
Avoid repeating the information from the triple, unless really essential.
# Response Format
Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: TD Ameritrade (historical headquarters)
Triple: [Omaha, Nebraska, homeTo, TD Ameritrade (historical headquarters)]
Generated description
TD Ameritrade (historical headquarters) refers to the former main corporate offices of the online brokerage firm TD Ameritrade, which was based in Omaha, Nebraska before its acquisition by Charles Schwab.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: TD Ameritrade (historical headquarters)
Target entity description: TD Ameritrade (historical headquarters) refers to the former main corporate offices of the online brokerage firm TD Ameritrade, which was based in Omaha, Nebraska before its acquisition by Charles Schwab.
  • A. State Street Pavilion
    The State Street Pavilion is a premium seating and hospitality area at Fenway Park offering elevated views of the field along with upscale amenities for Boston Red Sox fans.
  • B. Salesforce Tower vicinity
    Salesforce Tower vicinity is the bustling area surrounding San Francisco’s tallest skyscraper, characterized by dense office towers, transit connections, and the commercial core of the Financial District.
  • C. Chicago Stock Exchange
    The Chicago Stock Exchange is a regional securities exchange in the United States that facilitates the trading of stocks and other financial instruments.
  • D. Chicago Board of Trade
    The Chicago Board of Trade is one of the world’s oldest and most influential futures and options exchanges, serving as a major hub for trading agricultural and financial derivatives.
  • E. New York Stock Exchange Building
    The New York Stock Exchange Building is a historic neoclassical landmark in New York City that houses the world’s largest stock exchange by market capitalization.
  • F. None of above. chosen

Provenance (5 batches)

The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.

Step Stage Batch ID Status When
creating Elicitation batch_69a2e7f55c60819097aff65ea2ca2832 completed Feb. 28, 2026, 1:04 p.m.
NER Named-entity recognition batch_69a2ec7637c08190b695ec640edbf6c2 completed Feb. 28, 2026, 1:24 p.m.
NED1 Entity disambiguation (via context triple) batch_69a405f74cd08190a2e165506638607c completed March 1, 2026, 9:25 a.m.
NEDg Description generation batch_69a406a17fdc8190a067217b806fbc57 completed March 1, 2026, 9:28 a.m.
NED2 Entity disambiguation (via description) batch_69a4070050dc81909fdfbcfce23e428e completed March 1, 2026, 9:29 a.m.
Created at: Feb. 28, 2026, 1:08 p.m.